diff --git a/CHANGELOG b/CHANGELOG index 7a002f12a..004a68816 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -1,5 +1,8 @@ # Nmap Changelog ($Id$); -*-text-*- +o [NSE] Added vnc-title for logging in to VNC servers and grabbing the desktop + title, geometry, and color depth. [Daniel Miller] + o [NSE] More VNC updates: Support for VeNCrypt auth type, output of authentication sub-types in vnc-info, and all zero-authentication types are recognized and reported. [Daniel Miller] diff --git a/scripts/script.db b/scripts/script.db index b1af3bc63..cedfd4059 100644 --- a/scripts/script.db +++ b/scripts/script.db @@ -513,6 +513,7 @@ Entry { filename = "versant-info.nse", categories = { "discovery", "safe", } } Entry { filename = "vmauthd-brute.nse", categories = { "brute", "intrusive", } } Entry { filename = "vnc-brute.nse", categories = { "brute", "intrusive", } } Entry { filename = "vnc-info.nse", categories = { "default", "discovery", "safe", } } +Entry { filename = "vnc-title.nse", categories = { "discovery", "intrusive", } } Entry { filename = "voldemort-info.nse", categories = { "discovery", "safe", } } Entry { filename = "vuze-dht-info.nse", categories = { "discovery", "safe", } } Entry { filename = "wdb-version.nse", categories = { "default", "discovery", "version", "vuln", } } diff --git a/scripts/vnc-title.nse b/scripts/vnc-title.nse new file mode 100644 index 000000000..14c892daa --- /dev/null +++ b/scripts/vnc-title.nse @@ -0,0 +1,72 @@ +local creds = require "creds" +local shortport = require "shortport" +local stdnse = require "stdnse" +local vnc = require "vnc" + +description = [[ +Tries to log into a VNC server and get its desktop name. Uses credentials +discovered by vnc-brute, or None authentication types. +]] + +author = "Daniel Miller" +license = "Same as Nmap--See https://nmap.org/book/man-legal.html" +categories = {"intrusive", "discovery"} + +--- +-- @output +-- | vnc-title: +-- | name: LibVNCServer +-- | geometry: 800 x 600 +-- |_ color_depth: 24 +-- +-- @xmloutput +-- QEMU (instance-00000002) +-- 1024 x 768 +-- 24 + +dependencies = {"vnc-brute"} + +portrule = shortport.port_or_service( {5900, 5901, 5902} , "vnc", "tcp", "open") + +local function fail(err) return stdnse.format_output(false, err) end + +action = function(host, port) + + local v = vnc.VNC:new( host, port ) + local status, data + local result = stdnse.output_table() + + status, data = v:connect() + if ( not(status) ) then return fail(data) end + + status, data = v:handshake() + if ( not(status) ) then return fail(data) end + + local c = creds.Credentials:new(creds.ALL_DATA, host, port) + local tried = 0 + for cred in c:getCredentials(creds.State.VALID + creds.State.PARAM) do + tried = tried + 1 + stdnse.debug1("Trying creds: %s:%s", cred.user, cred.pass) + status, data = v:login(cred.user, cred.pass) + if status then + break + end + end + if tried < 1 then + --worth trying a None-type login + stdnse.debug1("Trying empty creds, for None security type") + status, data = v:login("", "") + end + if not status then + return fail(("Couldn't log in: %s"):format(data)) + end + status, data = v:client_init(true) + if status then + local out = stdnse.output_table() + out.name = data.name + out.geometry = ("%d x %d"):format(data.width, data.height) + out.color_depth = data.depth + return out + end + +end